As some of you know I just recently dropped a H22A in my 93 accord. I am now debating on whether to go with an after market header all the way back to exhaust or just to leave it as is. Is there a huge gain in power? Only reasoning im hesitating is because i get tired of a loud car. will it effect my gas mileage alot? right now with everything stock just a short ram intake i get 390mpg to the tank. If i do got with headers will some ebay ones do the job? Also since I had a f22a6 prior to the swap i dont have to do any wiring with the IAB correct? Thanks for any feedback!